Read the Wikipedia article. It was controversial to depict Jesus at all early on. Same as how Muslims think it's taboo to depict Muhammad. It's a middle eastern thing.
In the few instances there were depictions of Jesus or Muhammad, you usually saw them depicted in a manner consistent with the population doing the depiction. That's why I showed the depictions of him by the Ethiopians to show you that people just portray religious figures in a manner similar to their population.
For example in Islam one of the few groups to have done depictions of Muhammad and his followers were East Asian Muslims. Which is why the few Islamic artwork there is of Muhammad and his followers looks like this.
View attachment 714249
You see how Muhammad and his followers are depicted with East Asian features. Obviously that's not how Muhammad looked. But this is what people generally do when they depict religious figures. They tend to portray them to look like their own people. The interesting thing is when they don't do that. That's what makes the 13th century European depictions of the Black Madonna and Child interesting.